Sighting-telescope.



F. J. CLERY.

SIGHTING TELESCOPE.

APPLIOATION FILED APRJS, 191

Patented Feb.

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F. J; GLEARY.

SIGHTNG TELESCOPE.

APPLICATION FILED APR. 1a, 1913.

Patented Feb. 3, 1914.

ocal plane of the objective are engraved the cross lines 10. A primary or pointers eye piece is shown at 3, consisting of a col leetive lens 20, a reflecting means 21; and

vtvvo doublet lenses 22 and Q3; While at '4i is illustrated a' checking eye piece comprising a. collective lens Q5, andtwo doublet lenses 26 and 27.

Q8 indicates a prism for passing light to the eye piece 3, and reflecting light to the eye piece The cross lines 10 in this form of instrument being also inthe first focal plane oi the objective, the above objections relating to said lines are eil'ectually overcome. rlhe prism 9.8 is movable in and ont of the path of the rays passinto the eye piece 3, on the tube 50 and sleeve 5l, as indicated in dotted lines; and therefore this telescope can also be used with a full exit pupil.

It is obvious that those skilled in the art may vary the arrangement of parts as well as the details of construction Without departing Ji'rom the spirit ot my invention and therefore I do not Wish to be limited to the above disclosure except as may be re quired by the claims.

What I claim is l. In a sighting telescope the combination of an objective; cross lines in the focus of said objective; a primary eye piece coacting with said objective; a checking eye piece also coacting with said objective, and a movable member provided with av reecting means for said cross lines associated with both of said eye pieces; substantially as described.

2. In a sighting telescope the combination of an objective; cross lines in the focus ot' said objective; a primary eye piece coacting l with said objective; a checking eye piece also coaeting With said objective; a movable member provided-With a reiieeting` means associated with said eye pieces; and an erecting means located between said objective and eye pieces, substantially as described.

Copies of this patent may be obtained for ve cents each, by addressing Washington, D. C.

3. In a sighting telescope tlie combination of an objective; cross lines in the focus of said objective; a primary eye piece enact ing with said objective; a checking` eye piece also coacting` with said objective and a movable reflectingprism located between said objective and eye pieces, substantially as described. i

4;; In a sighting telescope the combination of an objective; cross lines in the focus oil? said objective; a primary eye piece enacting with said objective; a eheckin` eye piece also coacting' with said objective; means for detleetini;l light from said objective into one at said eye pieces while transmitting it into the other; and means for recieving said light' detleeting means out of the path of the ray entering said other eye. piece; substantially as described.

5. In a sightin` telescope the combination of an objective; cross lines in the focus of said objective; a primary eye piece coaeting with said objective; a checking eye piece also coaeting with said objective; an erecting system between said objective and said eye pieces; means for artificially lighting;` said cross lines; means for detlecting light :trom said objective into one ot said eye pieces While transmittin it into the other; and means for removing said light detlecting means ont of the path ot the ray entering said other eye piecea substantially as described. j

G. In a sighting telescope the combination of an objective; cross lines inthe focal plane of said objective; a primary eye piece eoacting with said object-ive; and a movable checking eye piece carrying a. detlecting prism, also, coaeting with said objective, substantially as described.

In testimony whereof` I atx my signature; in presence 'et two Witnesses.

FRANCIS J. CLEARY.

`Witnesses z f JOHN II. Sloeries,

T. A. INITHnnsrooN.

the Commissioner of Patents. 

